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#!/usr/bin/env bash

DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
alias ls=/bin/ls

function cleanup() {
  rm -f /tmp/$$
}

function die() {
  echo $1;
  exit 1;
}

trap cleanup SIGINT SIGTERM EXIT

[ -w "$DIR/proxies-enabled" ] || die "Permissions denied! Try sudo or login as root."

for proxy in `ls -1 $DIR/proxies-available/`; do
  echo -n " $proxy \"\" "
  if [ -e "$DIR/proxies-enabled/$proxy" ]; then
    echo -n "on"
  else
    echo -n "off"
  fi
done | xargs -0 -I '{}' echo --checklist \"Enable\/disable proxies\" 30 40 20 {} | xargs whiptail 2> /tmp/$$

[ $? != "0" ] && (echo "Configuration not changed."; exit 0)

enabled_proxies=`cat /tmp/$$`

if [[ ! -z "$enabled_proxies" ]]; then
  pushd "$DIR/proxies-enabled" > /dev/null
  for ep in $enabled_proxies; do
    ep=`echo $ep | sed "s/^\([\"']\)\(.*\)\1\$/\2/g"`
    [ -L $ep ] || ln -s ../proxies-available/$ep $ep
  done
  for proxy in `ls -1 $DIR/proxies-enabled`; do
    if [ -L $proxy ] && [[ ! "$enabled_proxies" =~ "\"$proxy\"" ]]; then
      rm -f $proxy 2> /dev/null
    fi
  done
  popd > /dev/null

  echo "Proxy configuration changed, please restart nginx"
fi

exit 0